What is the primary composition of liquids that contain benzene?

Benzene is an organic chemical compound that is a significant component of petroleum products. It is a colorless liquid with a sweet odor and is highly flammable. Benzene is produced during the refining of crude oil and is often found in gasoline, diesel, and other fossil fuels. This makes petroleum products the primary source of benzene, as they often contain varying amounts of this compound as a result of the refining processes used to extract and purify fuel.

In contrast, the other choices do not primarily contain benzene. Water is a pure substance without organic compounds like benzene. Household cleaners might contain various chemicals, but they typically do not include benzene as a primary ingredient due to safety regulations. Food items can contain a variety of substances, but benzene is not a constituent of food products under normal circumstances, as it is not beneficial for human consumption and can be harmful. Understanding the composition of materials that contain benzene is crucial for safety and environmental considerations in pollution response activities.